I work for USDA. Encryption is mostly a waste of time and money. There is another initiative, the one my Agency follows, to have all PII info removed from machines. We don't need encryption but we get to buy it. We also get to buy cable locks and lock them to our desk and in our cars. And Homeland Security is planning to spend billions for special keycards that will keep data on Federal laptops secure. Four different initiatives to solve the same problem.